Doomsday

Undying, Wither, Trample
Whenever Doomsday enter the battlefield, each opponent exile the top 10 cards of his or her Library's. Doomsdays has protection form cards with the same converted mana cost as the exiled cards.
Doomsday gets additional +2/+2 for each time he enter the battlefield form the graveyard or is cast form the command zone.